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For a recent year, the following are the numbers of homicides that occurred each month in a city. Use a 0.05 significance level to test the claim that homicides in a city are equally likely for each of the 12 months. Is there sufficient evidence to support the police commissioner's claim that homicides occur more often in the summer when the weather is better?
Jan. 38 Feb. 29 March 45 April 39 May 47 June 50
July 48 Aug. 51 Sep. 51 Oct. 43 Nov. 37 Dec 37
Project B costs $18,000 and you estimate you could save 18 injuries over the same period. Which project do you recommend? (Assume equal distribution of injuries.)
A boat leaves a dock at 2pm and travels due west at a speed of 15 km/h. Another boast has been heading due south at 12km/h and reaches the same dock at 3. at what time were the two boats closest together?
A reconnaissance airplane leaves its airport on the east coast of the United States and flies in a direction 85 degree. Because of bad weather, it returns to another airport 230 km due north of its home base.
Determine whether the following statement is true or false, and justify your answer: If the RMS error for predicting Y from X is equal to 1, then the correlation between Y and X is equal to 0.
Assume that maintenance repair times are distributed normally and that the MTTR is 60 minutes. Standard deviation is 20 minutes. What percent of the total population lies below 65 minutes?
Stonehenge in Salisbury Plains, England, was constructed using solid stone blocks weighing over 99,000 pounds each. Lifting a single stone required more than five hundred people, who pulled the stone up a ramp inclined at an angle of θ = 10° with the..
For the given function f
What is her investment worth at the end of 25 months - how much interest did she earn and How much will Mr. Sparky have saved up in his account if he makes these deposits for20 years?
A flower nursery manages 50,000 flowers and each year sells 10% of the flowers and plants 4,000 new ones. Write a recurring formula that provides the number of flowers each year.
Use Stokes' theorem to evaluate the integral of around the curve consisting of the straight lines joining the points
Find the LCM of each set of polynomials
Suppose that we are given a set of vectors {x(1),...,x(p)}, x(i) n, i = 1,...,p. Find the vector x n such that the average squared distance (norm) between and x(1),..., x(p),
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